What can result from improper maintenance of a septic system?

Improper maintenance of a septic system can lead to significant consequences, including system failure and environmental contamination. A septic system relies on a balanced process of breaking down waste and filtering it through soil. Without regular maintenance, such as pumping out accumulated sludge, checking for leaks, and ensuring that the system is functioning properly, the system can become overwhelmed.

When the septic system fails, the waste can overflow or back up, leading to potential health hazards. This contamination can spread to local water sources, impacting groundwater and surface water quality and posing risks to public health and the environment. Contaminated water can affect drinking water supplies and harm ecosystems, illustrating the critical need for proper septic system maintenance to prevent these adverse outcomes.

The other options suggest improvements or benefits that are not characteristics of an improperly maintained septic system, such as enhanced filtration or vermin control, which can actually be compromised due to neglect.